%K Crystals; Direct methanol fuel cells (DMFC); Ethers; Mechanical stability; Membranes; Methanol fuels; Microfiltration; Proton conductivity; Scanning electron microscopy; Water filtration, Direct-methanol fuel cells; Filtration methods; Fuel cell application; Methanol permeability; Nafions; Nafion®; Polyether sulfone; Polyether sulfone membranes; Water uptake; Zeolitic imidazolate framework-8, Methanol
%P 1843-1847
%O cited By 5; Conference of 2020 Regional Congress on Membrane Technology, RCOM 2020 and Regional Conference Environmental Engineering, RCEnvE 2020 ; Conference Date: 26 August 2020 Through 27 August 2020; Conference Code:169723
%I Elsevier Ltd
%X The imidazolate framework-8 (ZIF-8) crystals were synthesized by in -situ growth techniques inside the pore of porous poly ether sulfone (PES) in order to fabricate a composite PES/ZIF-8 electrolyte membrane for direct methanol fuel cell (DMFC) applications. In situ techniques by adapting the filtration method was adhered in this study. It was found that the proton conductivity (17.9 � 10-3Scm-1) was drastically increased for PES/ZIF-8 as compared to pristine PES membrane (0.21 � 10-3Scm-1). However, the methanol barrier property was slightly decreased from 2.07 � 10-7cm2s-1to 3.88 � 10-7cm2s-1for PES and PES/ZIF-8 membranes, respectively. The introduction of ZIF-8 in PES membranes not only improve proton conductivity, but also positively affected the mechanical stability of PES/ZIF-8 with 1.73-fold lower of swelling ratio even though the water uptake increased by 2.08 folds. In spite of the increment in methanol permeability, selectivity of PES/ZIF-8 membrane was 6 folds and 2 folds higher than pristine PES and Nafion®, respectively which indicated that the potential for PES/ZIF-8 to be a good candidate for electrolyte in DMFC applications. Nonetheless, via scanning electron microscopy (SEM) showed a good distribution of ZIF-8 crystals inside the pore of PES membranes which proven that the effectiveness of filtration techniques for ZIF-8 crystals in-situ growth synthesized within the pores. © 2020 Elsevier Ltd. All rights reserved.
%L scholars13591
%V 46
%D 2020
%T Inclusion of zeolitic imidazolate framework-8 (ZIF-8) crystals within porous polyether sulfone (PES) via filtration methods as potential electrolytes for DMFC applications
%J Materials Today: Proceedings
%A H. Junoh
%A J. Jaafar
%A N.A.H.M. Nordin
%A A.F. Ismail
%A M.H.D. Othman
%A M.A. Rahman
%A N. Yusof
%A F. Aziz
%R 10.1016/j.matpr.2020.12.1185